1973 BMW 1502 vs. 1963 Riley 4
To start off, 1973 BMW 1502 is newer by 10 year(s). Which means there will be less support and parts availability for 1963 Riley 4. In addition, the cost of maintenance, including insurance, on 1963 Riley 4 would be higher. At 1,622 cc (4 cylinders), 1963 Riley 4 is equipped with a bigger engine. In terms of performance, 1973 BMW 1502 (85 HP) has 18 more horse power than 1963 Riley 4. (67 HP). In normal driving conditions, 1973 BMW 1502 should accelerate faster than 1963 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 1963 Riley 4 weights approximately 218 kg more than 1973 BMW 1502.
Let's talk about torque, 1973 BMW 1502 (130 Nm @ 3500 RPM) has 9 more torque (in Nm) than 1963 Riley 4. (121 Nm @ 2500 RPM). This means 1973 BMW 1502 will have an easier job in driving up hills or pulling heavy equipment than 1963 Riley 4.
Compare all specifications:
| 1973 BMW 1502 | 1963 Riley 4 | |
| Make | BMW | Riley |
| Model | 1502 | 4 |
| Year Released | 1973 | 1963 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 1622 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 85 HP | 67 HP |
| Torque | 130 Nm | 121 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 76.2 mm |
| Engine Stroke Size | 71 mm | 88.9 mm |
| Engine Compression Ratio | 8.6:1 | 8.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1148 kg |
| Vehicle Length | 4240 mm | 4540 mm |
| Vehicle Width | 1600 mm | 1620 mm |
| Vehicle Height | 1420 mm | 1510 mm |
| Wheelbase Size | 2510 mm | 2530 mm |
| Fuel Tank Capacity | 50 L | 45 L |
